Water-tube boiler.



Patented Feb. 4, I902. J. A. ANDERSON.

WATER TUBE BOILER.

(Application filed. Dec. 10, 1900.

(No Model.)

Witnesses:

THE norms Pains co.. puorau'ma. wnsmnm'ou, n c

UNrTEn STATES PATENT OFFICE.

JAMES A. ANDERSON, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONEIIALF TO \VILIJAM A. PRICE, OF NEW YORK, N. Y.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent N 0. 692,223, dated February 4, 1902. Application filed December 10, 1900. Serial No. 39,315. (No model.)

T all whom it may COW/0 7%: late from the steam-d rum to the rear head- Be it known that I, JAMES A. ANDERSON, ers than is now possible. I also preferably acitizen of the United States, residing in the employ one or more deflecting-diaphragms loborough ofBrooklyn, city of New York, State cated within each of the back headers and 5 of New York, haveinventeda certain new and whereby the circulating water will be caused useful Improvement in \Vater-Tube Boilers, to more evenly distribute itself through the of which the following is a description. several tubes than is now possible.

My invention relates to various new and In order that my invention may be better useful improvements in water-tube boilers; understood, attention is directed to the ac- IO and the improvements relate particularly to companying drawing, showing, part-lyin secboilers of the so-called Babcock and Wiltion and partlyin elevation, the rear portion cox type, wherein a series of inclined tubes of a standard Babcock and Wilcox boiler are expanded into headers at their ends, equipped with my present improvements. which headers are connected to one or more Arepresentsthe tubes, which are expanded t5 steam-drums by a riser extending between at their rear ends into the back headers B each header and the drum. By assembling and are arranged, as heretofore, in a vertical a greater or smaller number of headers side series of the desired number. The headers by side the capacity of the boiler can be cor- B, as will be understood, are arranged side respondingly increased or diminished. The by side, so that the boiler amounts praoti-' 2o tendency of modern boiler practice is to incally to a series of steam-generating units crease the number of tubes in each vertical connected to one or more common steamseries in order that boilers of greater capaedrums. ity can be obtained without increasing the 0 represents the steam-drum, and D the floor-space. I have observed that with boilordinary mud-drum connected to the lower 25 ers of this type when a considerable increase ends of the headers.

in the number of tubes in each vertical series The headers B are made of the standard is made the lower tubes, for sometimes as width to accommodate the standard dimenmuch as their entire upper half, become filled sion of the tubes A, whereby the width of the with scale, due to the fact that the water cirboiler will not be increased. These headers o culation through such tubes is insufficient to are, however, made longer from front to back accommodate their steam-generating capacthan is common, and extendingup from each ity. In other words, with such boilers the header and connecting the same with the water descending through the back risers cirsteam-drum are the risers E E, two or more culatesimmediately through the upper tubes, of which connect each header with the steam- 35 so that the lower tubes become starved drum. These risers are of the usual diameinstead of receiving the larger proportionate ter as may be accommodated by the standard amount of Water, as they should, owing to width of. the headers; but their increased their closer proximity to the source of heat. number provides for an increased circula- The object of my invention is to provide a tion, whereby all the tubes will be properly 9c 40 water-tube boiler wherein these practical desupplied with circulating water. I arrange fects are overcome. within each header a diaphragm F, located In carrying myinventioninto eifectI make between the two risers, whereby the circuthe back headers of the standard width to lating water from the risers will descend past accommodate the standard diameter of tube, the upper tubes, so as to be directed into the 45 so that thewidth of the boilerisnotinoreased; lower tubes. The length of the diaphragm but I make these headers of greater dimen F will be determined by experiment and will sion from front to back, and I connect each be so proportioned as to result in theproper back header with the steam-drum by means quantity of circulating water reaching the of two or more risers arranged one in front lower tubes to accommodate their steam-gen- 50 of the other, whereby a very much greater eratingcapacity. When more thantworisers quantity of water will be permitted to circuextend up from each header, an additional header between two of said risers for de- 'flecting the circulating water from one riser past the upper tubes, substantially as set forth.

This specification signed and witnessed this 6th day of December, 1900.

JAMES A. ANDERSON.

\ Witnesses:

JNo. R. TAYLOR, AROHIBALD G. REESE. 

